Porous gamma-(Yi(1-x)Ho(x))(2)Si2O7 thermal insulator with excellent high-temperature strength retention and very low thermal conductivity
文献类型：期刊论文
| 作者 | Wu, Z; Hu, WP; Luo, YX; Sun, LC; Wang, JY |
| 刊名 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 38期号:9页码:3347-3353 |
| 关键词 | Porous rare earth silicate High-temperature thermal insulator In-situ reactionfoam-gelcasting method High-temperature strength Low thermal conductivity |
| ISSN号 | 0955-2219 |
| DOI | 10.1016/j.jeurceramsoc.2018.02.027 |
| 英文摘要 | High-temperature thermal insulation materials challenge extensive candidates with good mechanical, thermal and chemical reliability at high temperatures. Recently, porous gamma-Y2Si2O7 was indicated a promising thermal insulator in harsh environment; however, its strength at 1300 degrees C reduced to 34% of that at room temperature. In this work, we significantly improved its high-temperature strength by doping Ho. Highly porous gamma-(Y1-xHox)(2)Si2O7 solid solution was fabricated by in-situ foam-gelcasting method. Especially, porous gamma-(Y2/3Ho1/3)(2)Si2O7 demonstrated the optimal high-temperature strength, for instance 65% retention at 1300 degrees C, as well as high compressive strength (13.9 MPa) and low thermal conductivity (0.186 W/(m K)) at room temperature, at the porosity of 79.3%. Interestingly, porous solid solution sample displayed obviously lower thermal conductivity than the two end pure-phase porous materials. Porous gamma-(Y1-xHox)(2)Si2O7 solid solution is clearly highlighted as a promising high -temperature thermal insulator with outstanding high -temperature strength retention and optimal low thermal conductivity. |
| 学科主题 | Materials Science, Ceramics |
| 语种 | 英语 |
| WOS记录号 | WOS:000433014200035 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/80083]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, High Performance Ceram Div, Shenyang 110016, Liaoning, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Z,Hu, WP,Luo, YX,et al. Porous gamma-(Yi(1-x)Ho(x))(2)Si2O7 thermal insulator with excellent high-temperature strength retention and very low thermal conductivity[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,2018,38(9):3347-3353. |
| APA | Wu, Z,Hu, WP,Luo, YX,Sun, LC,&Wang, JY.(2018).Porous gamma-(Yi(1-x)Ho(x))(2)Si2O7 thermal insulator with excellent high-temperature strength retention and very low thermal conductivity.JOURNAL OF THE EUROPEAN CERAMIC SOCIETY,38(9),3347-3353. |
| MLA | Wu, Z,et al."Porous gamma-(Yi(1-x)Ho(x))(2)Si2O7 thermal insulator with excellent high-temperature strength retention and very low thermal conductivity".JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38.9(2018):3347-3353. |
入库方式： OAI收割
来源：金属研究所
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